Yo, Spinny, What are you doing? I have been trying to unravel this for more than a month, as I need to represent the Minkowski tensor's magnetic entries which I have generated in spheric form. My electron model presumes an A_phi, which I can decompose in the <x,y> plane, but my goal now is to put them through the Reissner-Nordstrom spherical solution. Nowhere I've looked details this.